Boomerang



FIG. 1 is a top plan view of a boomerang, showing our new design;

FIG. 2 is a cross sectional view thereof taken along line 2--2 of FIG. 1;

FIG. 3 is a cross sectional view thereof taken along line 3--3 of FIG. 1; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a boomerang, as shown and described. 